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Related Experiment Videos

Exploring azimuth effects with an anthropometric manikin.

D D Dirks, S Gilman

    The Journal of the Acoustical Society of America
    |September 1, 1979
    PubMed
    Summary

    The KEMAR manikin accurately simulates human eardrum sound pressure levels up to 8 kHz. It can replicate average human responses using pink noise or individual responses using pure tones.

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    Area of Science:

    • Acoustics
    • Bioacoustics
    • Anthropometry

    Background:

    • The KEMAR manikin is an anthropometric tool used to simulate human acoustic responses.
    • Understanding sound direction effects on the eardrum is crucial for audiology and acoustics research.

    Purpose of the Study:

    • To investigate the KEMAR manikin's eardrum response to sound from various directions.
    • To validate the KEMAR manikin's performance against established human auditory data.

    Main Methods:

    • Experiments were conducted in an anechoic chamber using a KEMAR manikin.
    • Pure tones and 1/3-octave bandwidth pink noise signals were used across a wide frequency range.
    • The manikin was rotated 360 degrees relative to a sound source, and simulated eardrum Sound Pressure Level (SPL) was measured.

    Main Results:

    • The KEMAR manikin's eardrum response was compared to averaged human field-to-eardrum data.
    • Valid simulation of average human responses was achieved using 1/3-octave pink noise up to approximately 8.0 kHz.
    • Equivalent responses to a single human with average dimensions were obtained using pure-tone signals up to approximately 8.0 kHz.

    Conclusions:

    • The KEMAR manikin is a reliable tool for acoustic research up to 8.0 kHz.
    • It can effectively simulate both averaged and individual human eardrum responses under specific signal conditions.
    • This validates the manikin's utility in studying directional acoustics and audiology applications.

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